Automatic cylinder drain-valve.



PATBNTBD JULY 10, 1906.

P. P. BROOKS.

AUTOMATIC CYLINDER DRAIN VALVE.

APPLICATION FILED AUG.16,

UNITED i ififiiiyi lg FATE NT OFFICE. FUSE)" mam? Bimin -s my MATH!ESBURLL MISSISSIPPI. AUTGMATiC CYLHXEDER DFUHNVALVE.

Speniiimt-iun sf Letters Patent Patented July 10, 1 906.

AppiicLlLi-ul! flied August iii, 1905. Serial N 274,455.

Usitissbm Stair: (if M useful [in i 4 u 01mm 5, andits riy threaded to 1 Of the bonnet 5 i sit :1 image 6 to fit against was (in iil lTUVTlii: s i 12m The Didi-(3?; n" imprm'e the can vsiwjrs and in pi g face 7 sdjiicent ii sis it to Tm readily and an! of the vaive-body. The dc cqnstitutes the from; of the si nsd for use 7 tivss pumps, i r h-sdy is wountsrbolfsd is ro1 .ibiv ill? W225i}! 1 shsuider 8, and it has 21 ev- E} ii? inner end to receive a 1i), the wings 11 terminsti "iimiiiler when the valve is His-d in Fig.

{inn 0? strum L1: sired r my: 1 I

i mmpiui: to L tcmisi' maintained in a {I I i sure under the comm} of {U3 sang] .ser aiui (511" pa-his of opening siit-nmiiiic:siiy to permit the F escape of steam, and '{Lifli when the ii-assure is reduced by the cngim-w.

With thes s and Utili sbjscts in v invention consists in 1.11s coiist. in j '5' nsvsi sombinsiiun and ,sii-iziiigsniwiiof pans, g iimsnfi sis'ek hereinafter fiiziy (ies I v-6, ilhzsratwl in 511s i (fins- 21 fisni time to time to fit accompanying if'iflvifr and pmizitsii but is j er 'ihs ji'eaz' portion 14 of the body or sasthe claims hereto append i, it bi'ing iindsrthe valve constitutes a iston-ehamstood that Ymfiuus changes in the farm prs am? the pistemhssd, whicii IS adapted to portion, size, Md 1111110: LiE'i'iLiiS uf csnsirss g'siiiis in tiisci'isnzbsr 14, is provided with a i pmvided at its rear end with 12 which is arranged Within 1 of $12 valve-body sgui which by a. cylindrisa mssraisisis v's'iliP-h is previcisd ts sfisrd sufto snabie ths vaive to be ground the seat proptiun within the scope of this sis may 1% pair of packing-rings 15, seated in ooves resorted tn Wiihi'mt rjiepsu'tii g from the'spirifand adapted to be smpioysd whet; air is used or sacrificing 2.13591 the sziviu'iiages of 1252 iiiills vsive normally on its ventien. r

far maintainin swif Tifiis psiiriiiw-Iin In the drawings Figure 1 is a sidreii whim swim; is i'aiiipii ye tion of :1- ic comoi-ivs provided. with s. cayiim sornpmiyiiig diswings,

with this invention. Fig. is s reverse; piim 7 if dvsirmi The res; er isten end of the valve is prnviiisd with a f; eaded socket 16, view illustrating the arrangement. 0f the air I fiomstic drain-valves at the ends of two 1000 adapted to enabie it 0 be connected with a tool for gm {idifig the vsive into the seat. rnobiv'ecylinders. Fig. 3 is an enlarged side Tim rear 01: inser and 0f the body or casin elevation (if the autumritic drainwsh s Fig. I 41's a longitudinsi! seetisn a! visw of the ssm I a may be provided as shown in the acof the naive is prsvided with a threade 1g. 5 is 0. sections} View on the line 5 5 of like numerals 0f reference designate 00rresponding parts in all the figures of the drawings.

1 designates the :mtmimtic drain-vs1ve body, desi med to be constructed of brass or cither suit iiie material and previileii at the eral steam inlet; 01 passags for the escape of l I steam and waterfrmii the cjriiuder 4 of a Uzi valve-body 1ithe Masai and which Has a.

4 of the draw- I he beveled sagging psfi ion' g locomntive from jshe front" but can be omitted,

sections pou led to the rear portion thereof to a three way valve 21, located in the cab of the locomotive. The three-way valve is connected by a pipe 22 with the main steam-tube of the boiler 23 of the locomotive, which is tapped at a suitable point. The three-way valve is also provided with an exhaust-pipe 24, which extends downward and which discharges extcriorly of the cab. As the boiler pressure is in excess of eylinder-pressure, and also as the diameter oi the piston-head is in excess of that of the valve-face, the valve will remain firmly seated when there is a'constant pressure against the pistonhead. When it is desired to drain the cylinders of the locomotive, the th res-way coelr is operated to cut oil the supply of steam. and to connect the pipe or tube 20 with the exhaust-pipe for reducing the pressure in rear of the valves. The front face of the enlarged rear or piston-head portion of the valve is slightly curved to form a semi steam groove, the face 13 of which is of less area than the piston-head, and the cylimlerpres-- sure operating against the said face 13 will move the valve rearward, thereby permitting the steam and water of condensation to blow out through the outlet opening or passage of the bonnet of the valve. The pipe 2? may be connected with any other suitable source of fiuid-pressure-as, for instance, the

main air-drum or any other portion of the air-brake system-and the threeway valve will enable such pressure to be controlled for holding the automatic valve on. its seat and for reducing the pressure in rear thereof to permit an automatic operation of the valve to drain the cylinder,

The pipes or tubes 18 and 19, which connect the, automatic drain-va1ves, may, if de sired, be provided with a drain valve or cook for preventing water from accumulating and freezing therein and to enable any water to be dischar ed from them.

It wil be seen that the drain-valve is automatic in its opening operation, and that as soon as the rear piston-head is relieved of pressure it will automatically open and permit a discharge of steam from the cylinder and a consequent ejection of water accumulating in that end of the cylinder. Furthermore, it will be apparent that as soon as pressure is applied to the piston-head the seat-engaging portion or valve proper will be carried into engagement with the valve seat, and the outlet will be closed to prevent an escape of the steam. Also it will be apparentthat the main valve is applicable to various forms of pumps and cylinders and that it will prevent injury resulting from accumulation of Water in them.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An automatic drain-cock comprising a casing provided at the front with an outlet and having a lateral inlet at an intermediate point for connection with a steam-cylinder, said casing being also provided in rear of the lateral inlet with a piston-head chamber and having a rear inlctport for the admission of lluid-pressure, a valve-seat located in advance of the lnteal inlet, and a valve coop-- erating with the seat and provided with a piston-head operating in the said. chamber in rear oftlie lateral inlet, said valve being also provided at an interi iate point with a face of less area than the p ston-head and located at the lateral inlet, whereby is is subjected. to constant cylinderqn-essure.

2. An automatic drain-valve comprising a casing having a latte-15 inlet and provided in rear 0% the same with a piston-head chamber and having a rear inlot-port for the admission of iiuid-prcssure, a valve-seat arranged in advance of the lateral inlet, and a valve cooperating with the seat and provided with a piston-head operating in the said chamber, said piston-hcad being of greater diameter than the valve and provided at its front with a partial steam-groove exposed at the lateral inlet.

3. An automatic drain-valve comprising a casing having a lateral inlet and provided in rear of the same with a piston-head chamber and having a roar inlet for the admission of fluid-pressure, a valvc-soat arranged in ad vance of the lateral inlet, and a valve having a front seat-engaging portion and provided with a roar piston-head operating in the said chamber in rear of the lateral inlet and provided'at its front with a partial steam-groove exposed at the said lateral inlet, said valve being also provided with an intermediate connecting portion located between the steamgroove and the seat-e1 gaging portion.

4 An automatic drain-valve comprising a casing having a lateral inlet and provided in rear of the same with a piston-head chamber and having a rear inlet-port for the admission of iluid-pressure, a valve-bonnet secured to the casing in advance of the lateral inlet and provided with a valve-seat, said bonnet being also provided with an interioriy-arranged shoulder, and a winged valve having a scat-engaging portion and provided in rear of the lateral inlet with a piston-head, the wings of the valve extending into the bonnet and termiiniting short of the said shoulder.

An automatic drain-valve comprising a casing having a lateral inlet and provided in rear of the same with a piston-head chamber and having a rear inlot-port for the admission of fluid-pressure, a separate VfllVtrlKJlP net secured to the front of the casing in advance of the inlet and provided with a valve seat and having a front outlet, and a valve cooperating with the valve-seat and provided with a piston-head operating in said chamber in rear of the lateral inlet, said vulva being aisv prm'ided at an intermediate my awn {have harem affixed my signaiure in Faint with a face of iess area. than the piston tbs prssenee sf {1W9 witnesses. ikld and Pfifiiitd at liitll'fi! inlet, and the said mitlei mm wanted in from; vi the wake 5 and a2 a, pain upesi the mar inlet, which Witnesses:

i5 hula-(73d bacimi file. piston-head. M. J. EILEY,

vIn testimony thatrlciaim the foregfiing as H. KATE 

